San Juan County Public Works replaced one 30 inch diameter culvert and one 18 inch diameter culvert with a bridge 41 feet span and 28 feet wide at the mouth of Cascade Creek on Orcas Island, where it flows into Buck Bay under Point Lawrence Road in San Juan County. The project constructed a 19-foot wide channel for Cascade Creek in the upper intertidal zone under the new bridge. The existing culverts were inadequately sized to convey flood flows down Cascade Creek and to allow full fish passage and tidal exchange. This project allows full fish passage to pristine shaded riparian habitat at the lower reaches of Cascade Creek including portions which are estuarian. Targeted species include documented coho and documented coastal cutthroat. This fish passage and tidal flow barrier removal project was initiated by Public Works in August of 2003. In 2004, the culverts required emergency repair. The 2004 Hydraulic Project Approval required culvert replacement by July 2011 with a structure designed for fish passage. In 2004, project was placed on the 6-year Transportation Improvement Program, funds allocated, and scheduled to meet the 2011 deadline. The new channel was opened to creek and tidal flow and the new bridge opened to traffic on Sept 30, 2011.